TDRSS lightcurve for Trigger=894557

Notes:

• 1) None of the TDRSS light curves are background subtracted.

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 23 Mar 19 20:31:03 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     894557,   Seg_Num: 0
GRB_RA:           40.153d {+02h 40m 37s} (J2000),
                  40.526d {+02h 42m 06s} (current),
                  39.190d {+02h 36m 46s} (1950)
GRB_DEC:         +61.246d {+61d 14' 45"} (J2000),
                 +61.327d {+61d 19' 39"} (current),
                 +61.031d {+61d 01' 53"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       416 [cnts]    Image_Peak=50 [image_cnts]
TRIGGER_DUR:     0.128 [sec] 
TRIGGER_INDEX:   119     E_range: 15-50 keV
BKG_INTEN:       15079 [cnts]
BKG_TIME:        73833.38 SOD {20:30:33.38} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18565 TJD;    82 DOY;   19/03/23
GRB_TIME:        73847.20 SOD {20:30:47.20} UT
GRB_PHI:         -139.83 [deg]
GRB_THETA:        40.12 [deg]
SOLN_STATUS:     0x103
RATE_SIGNIF:     11.13 [sigma]
IMAGE_SIGNIF:    7.26 [sigma]
MERIT_PARAMS:     +1  +0  +0  -3  +1  -3  +0  +1 -39  +0 
SUN_POSTN:         2.68d {+00h 10m 43s}   +1.16d {+01d 09' 40"}
SUN_DIST:         66.64 [deg]   Sun_angle= -2.5 [hr] (East of Sun)
MOON_POSTN:      220.01d {+14h 40m 02s}  -10.50d {-10d 29' 59"}
MOON_DIST:       129.17 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      135.68,  1.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       59.86, 42.92 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This matches a source in the ground catalog: 2CG_135+01,   delta=0.212 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 216.61,13.44 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 23 Mar 19 20:59:08 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     894557,   Seg_Num: 0
GRB_RA:           40.153d {+02h 40m 37s} (J2000),
                  40.526d {+02h 42m 06s} (current),
                  39.190d {+02h 36m 46s} (1950)
GRB_DEC:         +61.246d {+61d 14' 45"} (J2000),
                 +61.327d {+61d 19' 39"} (current),
                 +61.031d {+61d 01' 53"} (1950)
GRB_DATE:        18565 TJD;    82 DOY;   19/03/23
GRB_TIME:        73847.20 SOD {20:30:47.20} UT
TRIGGER_INDEX:   119
GRB_PHI:         -139.83 [deg]
GRB_THETA:        40.12 [deg]
DELTA_TIME:      58.00 [sec]
TRIGGER_DUR:     0.128 [sec] 
SOLN_STATUS:     0x103
RATE_SIGNIF:     11.13 [sigma]
IMAGE_SIGNIF:    7.26 [sigma]
LC_URL:          sw00894557000msb.lc

Initial TDRSS lightcurve and spacecraft attitude plot

TDRSS lightcurve from T0-30 to T0+50 (zoom in)

TDRSS light curve from T0-1 to T0+2 (More zoom in)

1.6s binned TDRSS light curve

Extended TDRSS light curve and spacecraft attitude plot(s)

Extended TDRSS lc No.1

Extended TDRSS lc No.2

Extended TDRSS lc No.3

Plot creation:
Sat Mar 23 16:59:22 EDT 2019